Reincarnation

Reincarnated into novel FL wrote

A doctor reincarnates as a child (random xtra character) into a murim novel he had read prior to death

Main character dies and wakes up in novel he's read, but not the whole series.

35yr old veterinarian dies and reincarnates as a slave. Then finds out she's the illegitimate daughter of emperor and becomes a princess. Her husband is a traitor and she is becomes a slave again.

Gets memories of past life as toddler. Remembers that she's a villain in novel and is trying to change her story

Reincarnated as Count's daughter.

Hero tired of being savior, dies after killing demon and swears to never touch a sword again. Reincarnates into a swordsmanship family as third son. Known as lazy young master since he doesn't train. 1st wife then tries to assassinate his mother the 2nd wife and he picks up sword again. However he's still hiding his abilities.